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Factory Mast Engine Block Super Lightened L8T- LTX Block Super Lightened LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
Factory Mast Engine Block Super Lightened L8T- LTX Block Super Lightened LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
Factory Mast Engine Block Super Lightened L8T- LTX Block Super Lightened LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
Factory Mast Engine Block Super Lightened L8T- LTX Block Super Lightened LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
Factory Mast Engine Block Super Lightened L8T- LTX Block Super Lightened LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
Factory Mast Engine Block Standard - Factory Main Bolts Copy of LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
Factory Mast Engine Block Standard - Factory Main Bolts Super Lightened LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
Factory Mast Engine Block Super Lightened L8T- LTX Block Super Lightened LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
Factory Mast Engine Block Super Lightened L8T- LTX Block Super Lightened LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
Factory Mast Engine Block Super Lightened L8T- LTX Block Super Lightened LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
Factory Mast Engine Block Super Lightened L8T- LTX Block Super Lightened LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
Factory Mast Engine Block Super Lightened L8T- LTX Block Super Lightened LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
Factory Mast Engine Block Super Lightened L8T- LTX Block Super Lightened LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
Factory Mast Engine Block Super Lightened L8T- LTX Block Super Lightened LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
Factory Mast Engine Block Super Lightened L8T- LTX Block Super Lightened LT Cast Iron LTX  - Gen V Cast Iron  - L8T - 6.6 Truck Block
$ 2,999.00

$ 3,850.00

Super Lightened LT Cast Iron LTX - Gen V Cast Iron - L8T - 6.6 Truck Block

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Only left in stock

Drag Race Spec L8T- GM Gen V Cast Iron - Super Lightened Block

We take the awesome new L8T and perform a multi axis CNC lightening program to reduce this hefty boy down by 30 lbs over the Factory L8T-  

Now this husky block is ready to shave some weight and put the weight savings in on the boost lbs.

Mast Motorsports product line ensures only the most premium components and rigorous inspection process, combined with proven Mast quality, and experience.

Introduced in model year 2020 for the GM Silverado HD pick up.  The GM Cast Iron Gen V (LT Series) block promises to deliver on big power potential when paired with the right Mast Motorsports or Factory Mast components.

We hand pick these lightly used blocks and put them through an extensive quality inspection and refurbish program.  All blocks are machined, line honed, and decked to ensure they meet our quality standards.  100% inspected, and pressure tested, before shipping to you.

Pair this with our Black Label LT Cylinder Heads - tuned in for port injection and or direct injection for maximum wheel standing giggle factor.

Capable of 4.125" (+) stroke, 4.125" (+) bore size.

 

Specs:

  • Material - Cast Iron
  • Comes Line Honed with ARP Main Studs
  • Stock Bore Size - 4.065
  • Deck Height - 9.240
  • STARTING Weight - 245 lbs
  • LIGHTENED by 30 lbs Weight - FINAL WEIGHT 215 lbs!

Options:

  • Final Bore & Hone to your specs!
  • Get Sendy with this.